I've downloaded the desktop MQTT client and can subscribe to my feed. I have thoroughly tested the ESP setup by reading values from thingspeak via http get, but I want to use MQTT with io.adafruit so I don't have to poll all the time. I never get anything back in the subscription loop even when I flip the value via the dashboard and publish values via the desktop client. Any help would be really appreciated. Thanks!
Output:
Connecting to BANNED
......
WiFi connected
IP address:
192.168.xx.yyy
Connecting to MQTT... MQTT Connected!
Entering While Loop
Entering While Loop
Entering While Loop
.. this loops forever and never shows any messages.
My code below is barely modified from the example:
Code: Select all
/***************************************************
Adafruit MQTT Library ESP8266 Example
Must use ESP8266 Arduino from:
https://github.com/esp8266/Arduino
Works great with Adafruit's Huzzah ESP board:
----> https://www.adafruit.com/product/2471
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
Written by Tony DiCola for Adafruit Industries.
MIT license, all text above must be included in any redistribution
****************************************************/
#include <ESP8266WiFi.h>
#include "Adafruit_MQTT.h"
#include "Adafruit_MQTT_Client.h"
/************************* WiFi Access Point *********************************/
#define WLAN_SSID "XXXXX"
#define WLAN_PASS "XXXXX"
/************************* Adafruit.io Setup *********************************/
#define AIO_SERVER "io.adafruit.com"
#define AIO_SERVERPORT 1883
#define AIO_USERNAME "yyyyyy"
#define AIO_KEY "BANNED"
/************ Global State (you don't need to change this!) ******************/
// Create an ESP8266 WiFiClient class to connect to the MQTT server.
WiFiClient client;
// Store the MQTT server, username, and password in flash memory.
// This is required for using the Adafruit MQTT library.
const char MQTT_SERVER[] PROGMEM = AIO_SERVER;
const char MQTT_USERNAME[] PROGMEM = AIO_USERNAME;
const char MQTT_PASSWORD[] PROGMEM = AIO_KEY;
// Setup the MQTT client class by passing in the WiFi client and MQTT server and login details.
Adafruit_MQTT_Client mqtt(&client, MQTT_SERVER, AIO_SERVERPORT, MQTT_USERNAME, MQTT_PASSWORD);
/****************************** Feeds ***************************************/
// Setup a feed called 'onoff' for subscribing to changes.
const char ONOFF_FEED[] PROGMEM = AIO_USERNAME "/feeds/onair";
Adafruit_MQTT_Subscribe onoffbutton = Adafruit_MQTT_Subscribe(&mqtt, ONOFF_FEED);
/*************************** Sketch Code ************************************/
// Bug workaround for Arduino 1.6.6, it seems to need a function declaration
// for some reason (only affects ESP8266, likely an arduino-builder bug).
void MQTT_connect();
void setup() {
Serial.begin(115200);
pinMode(0, OUTPUT);
pinMode(5, OUTPUT);
pinMode(12, OUTPUT);
pinMode(13, OUTPUT);
pinMode(14, OUTPUT);
digitalWrite(0, HIGH);
digitalWrite(5, HIGH);
digitalWrite(12, HIGH);
digitalWrite(13, HIGH);
digitalWrite(14, HIGH);
delay(10);
Serial.println(F("Adafruit MQTT demo"));
// Connect to WiFi access point.
Serial.println(); Serial.println();
Serial.print("Connecting to ");
Serial.println(WLAN_SSID);
WiFi.begin(WLAN_SSID, WLAN_PASS);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println();
Serial.println("WiFi connected");
Serial.println("IP address: "); Serial.println(WiFi.localIP());
// Setup MQTT subscription for onoff feed.
mqtt.subscribe(&onoffbutton);
}
uint32_t x=0;
void loop() {
// Ensure the connection to the MQTT server is alive (this will make the first
// connection and automatically reconnect when disconnected). See the MQTT_connect
// function definition further below.
MQTT_connect();
// this is our 'wait for incoming subscription packets' busy subloop
Adafruit_MQTT_Subscribe *subscription;
Serial.println("Entering While Loop");
while ((subscription = mqtt.readSubscription(1000))) {
Serial.print(F("Got: "));
Serial.println((char *)onoffbutton.lastread);
if (subscription == &onoffbutton) {
Serial.println(F("inside if"));
}
}
// ping the server to keep the mqtt connection alive
if(! mqtt.ping()) {
mqtt.disconnect();
}
delay(1000);
}
void lightOff(){
digitalWrite(0, HIGH);
digitalWrite(5, HIGH);
digitalWrite(12, HIGH);
digitalWrite(13, HIGH);
digitalWrite(14, HIGH);
}
void lightOn(){
digitalWrite(0, LOW);
digitalWrite(5, LOW);
digitalWrite(12, LOW);
digitalWrite(13, LOW);
digitalWrite(14, LOW);
}
// Function to connect and reconnect as necessary to the MQTT server.
// Should be called in the loop function and it will take care if connecting.
void MQTT_connect() {
int8_t ret;
// Stop if already connected.
if (mqtt.connected()) {
return;
}
Serial.print("Connecting to MQTT... ");
while ((ret = mqtt.connect()) != 0) { // connect will return 0 for connected
Serial.println(mqtt.connectErrorString(ret));
Serial.println("Retrying MQTT connection in 5 seconds...");
mqtt.disconnect();
delay(5000); // wait 5 seconds
}
Serial.println("MQTT Connected!");
}